test CrossHatchFilter serialization

jme3-effects/src/test/java/com/jme3/post/filters/CrossHatchFilterTest.java

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+/*
+ * Copyright (c) 2023 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package com.jme3.post.filters;
+
+import com.jme3.asset.AssetManager;
+import com.jme3.asset.DesktopAssetManager;
+import com.jme3.export.binary.BinaryExporter;
+import com.jme3.math.ColorRGBA;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Automated tests for the {@code CrossHatchFilter} class.
+ *
+ * @author sgold
+ */
+public class CrossHatchFilterTest {
+    /**
+     * Tests serialization and de-serialization of a {@code CrossHatchFilter}.
+     * This test would've detected JME issue #2169, for instance.
+     */
+    @Test
+    public void testSaveAndLoad() {
+        CrossHatchFilter filter = new CrossHatchFilter();
+
+        // Verify the default parameter values:
+        verifyDefaults(filter);
+
+        // Set parameters to new values:
+        filter.setColorInfluenceLine(0.7f);
+        filter.setColorInfluencePaper(0.2f);
+        filter.setEnabled(false);
+        filter.setFillValue(0.95f);
+        filter.setLineColor(ColorRGBA.Blue.clone());
+        filter.setLineDistance(3f);
+        filter.setLineThickness(0.9f);
+        filter.setLuminanceLevels(0.95f, 0.75f, 0.54f, 0.32f, 0.21f);
+        filter.setPaperColor(ColorRGBA.Yellow.clone());
+
+        // Create a duplicate filter using serialization:
+        AssetManager assetManager = new DesktopAssetManager();
+        CrossHatchFilter copy = BinaryExporter.saveAndLoad(assetManager, filter);
+
+        // Verify the parameter values of the copy:
+        Assert.assertEquals(0.7f, copy.getColorInfluenceLine(), 0f);
+        Assert.assertEquals(0.2f, copy.getColorInfluencePaper(), 0f);
+        Assert.assertEquals(0.95f, copy.getFillValue(), 0f);
+        Assert.assertEquals(ColorRGBA.Blue, copy.getLineColor());
+        Assert.assertEquals(3f, copy.getLineDistance(), 0f);
+        Assert.assertEquals(0.9f, copy.getLineThickness(), 0f);
+        Assert.assertEquals(0.95f, copy.getLuminance1(), 0f);
+        Assert.assertEquals(0.75f, copy.getLuminance2(), 0f);
+        Assert.assertEquals(0.54f, copy.getLuminance3(), 0f);
+        Assert.assertEquals(0.32f, copy.getLuminance4(), 0f);
+        Assert.assertEquals(0.21f, copy.getLuminance5(), 0f);
+        Assert.assertEquals("CrossHatchFilter", copy.getName());
+        Assert.assertEquals(ColorRGBA.Yellow, copy.getPaperColor());
+        Assert.assertFalse(copy.isEnabled());
+    }
+
+    /**
+     * Verify some default values of a newly instantiated
+     * {@code CrossHatchFilter}.
+     *
+     * @param filter (not null, unaffected)
+     */
+    private void verifyDefaults(CrossHatchFilter filter) {
+        Assert.assertEquals(0.8f, filter.getColorInfluenceLine(), 0f);
+        Assert.assertEquals(0.1f, filter.getColorInfluencePaper(), 0f);
+        Assert.assertEquals(0.9f, filter.getFillValue(), 0f);
+        Assert.assertEquals(ColorRGBA.Black, filter.getLineColor());
+        Assert.assertEquals(4f, filter.getLineDistance(), 0f);
+        Assert.assertEquals(1f, filter.getLineThickness(), 0f);
+        Assert.assertEquals(0.9f, filter.getLuminance1(), 0f);
+        Assert.assertEquals(0.7f, filter.getLuminance2(), 0f);
+        Assert.assertEquals(0.5f, filter.getLuminance3(), 0f);
+        Assert.assertEquals(0.3f, filter.getLuminance4(), 0f);
+        Assert.assertEquals(0f, filter.getLuminance5(), 0f);
+        Assert.assertEquals("CrossHatchFilter", filter.getName());
+        Assert.assertEquals(ColorRGBA.White, filter.getPaperColor());
+        Assert.assertTrue(filter.isEnabled());
+    }
+}